Shuttle-motion of looms



ITED STATES PATENT OFFICE.

GEORGE W. PERRY, OE THOMPSON, CONNECTICUT.

SHUTTLE-MOTION 0F LOOMS.

Specification of Letters Patent No.

To all whom t may concern Be it known that I, GEORGE W. PERRY, ofThompson, in the county of Windham and State of Connecticut, haveinvented cert-ain new and useful Improvements in the Mode of Hanging thePicker-Staffs of Looms; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming part of this specification.

The drawing represents the lay of a loom with the picker staffs attachedto the swords, the lay being shown in section and the view being takenat the front side.

My invention consists in hanging the picker staves each on two radiusrods which are attached to fixed centers on the swords or frame of thelay, being connected by joint pins o-ne at the lower end and the otherat a suitable distance from it. The effect produced by this arrangementbeing to cause the end of the staff which acts upon the shuttle to movein a right line parallel to the raceway, the two radius rods producing aparallel motion without the aid of any other device for guiding orcontrolling it.

A, represents the lay; a, the slots through which the pickers work; B,the swords which carry the lay.

C, is one of the picker staffs, D, is the radius rod to which its lowerend is attached by a pin the radius rod being hung on a center C, whichis fixed in the sword. E, is the other radius rod which should be aslong as convenience will allow, it is hung on a fixed center CZ, in thesword and is attached to the picker staff by a pin c, at a distance froml), equal to the distance between b, and c, the rod itself being equalin length to the distance between c, and d.

F is a spring placed between the sword and the picker staff to throwback the staff.

C, is the other picker sta', on the opposite side of the lay, it isconnected by other radius rods D', and E', similar to D, and

E, and is provided with a similar spring F. Motion may be communicatedto the 8,506, dated November 11, 1851.

picker staffs for the purpose of throwing the shuttle by cams andweights or springs, or by any suitable means, and such motion at theupper endof the picker must-provided the radius bars and the distancesof their centers are properly set out-be in a right line parallel to theraceway, the whole length of the picker staffI moving toward or from thecenter of the lay.

In the drawing the picker C, is represented thrown back ready to comeinto opera-tion and C, is thrown forward supposed to have just thrownthe shuttle, C, being shown in the same position in red lines, C, isalso shown at half stroke in red lines. The dotted red lines representthe motions described by the points b, and e, and also by the end of thepicker staff'.

The principal advantage derived fro-m this improved picker motion, isthat the end of the pick is made to describe a rectilinear motion by avery simple contrivance inexpensive in construction and working withvery much less friction than any other description of guide, andrequiring less power than where the lower end of the staff rests againstor moves on a stationary fulcrum.

Having thus described my invention, I do not claim hanging the pickerstaff on a radius rod, as I am aware that it has been so hung, and bythe aid of other devices in connection, a motion parallel to the racewayhas been produced; but

lVhat I do claim and desire to secure by Letters Patent is- Hanging thepicker staff or staffs upon radius rods D, and E, having two distinctradial motions, substantially as herein set forth, for the purpose ofcausing the end which operates upon the shuttle to describe or make arectilinear motion parallel with the raceway and with less pow-er thanhas heretofore been done.

GEORGE WV. PERRY.

-Witnesses:

H. JOHNSON, LUCIAN CARPENTER.

